make backspace scroll up in blame view and document space key
diff --git a/tog/tog.1 b/tog/tog.1
index 4a9bef0..6cbea76 100644
--- a/tog/tog.1
+++ b/tog/tog.1
@@ -115,9 +115,9 @@ The key bindings for
.Cm tog blame
are as follows:
.Bl -tag -width Ds
-.It Cm Down-arrow, j, Page-down
+.It Cm Down-arrow, j, Page-down, Space
Move the selection cursor down.
-.It Cm Up-arrow, k, Page-up
+.It Cm Up-arrow, k, Page-up, Backspace
Move the selection cursor up.
.It Cm Enter
Switch to the
diff --git a/tog/tog.c b/tog/tog.c
index f025bcd..57e777c 100644
--- a/tog/tog.c
+++ b/tog/tog.c
@@ -1546,6 +1546,7 @@ show_blame_view(const char *path, struct got_object_id *commit_id,
first_displayed_line--;
break;
case KEY_PPAGE:
+ case KEY_BACKSPACE:
if (first_displayed_line == 1) {
selected_line = 1;
break;